New opportunities in condensed matter physics for nanoscale quantum sensors
arxiv(2024)
摘要
Nitrogen vacancy (NV) centre quantum sensors provide unique opportunities in
studying condensed matter systems: they are quantitative, noninvasive,
physically robust, offer nanoscale resolution, and may be used across a wide
range of temperatures. These properties have been exploited in recent years to
obtain nanoscale resolution measurements of static magnetic fields arising from
spin order and current flow in condensed matter systems. Compared with other
nanoscale magnetic-field sensors, NV centres have the unique advantage that
they can probe quantities that go beyond average magnetic fields. Leveraging
techniques from magnetic resonance, NV centres can perform high precision noise
sensing, and have given access to diverse systems, such as fluctuating
electrical currents in simple metals and graphene, as well as magnetic dynamics
in yttrium iron garnet. In this review we summarise unique opportunities in
condensed matter sensing by focusing on the connections between specific NV
measurements and previously established physical characteristics that are more
readily understood in the condensed matter community, such as correlation
functions and order parameters that are inaccessible by other techniques, and
we describe the technical frontier enabled by NV centre sensing.
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